function aminvar = argminVar(vbeta)
    
    global n Vstar
    
    %using a sequence of optimization procedures
       
       
        
    Dstar=randargminVar(vbeta, .001, .999);
    DstarAnneal=simannealargminVar(vbeta, Dstar, 4, 10000);
    Dstarstar=greedyargminVar(vbeta, DstarAnneal, 1);
 
       
    aminvar=Dstar;       


return
